Brace attachment for pivoted draft-bars of vehicles.



No. 759,745. PATENTED MAY 10, 1904.

L. H. & A. G. PLANK. BRAGE ATTACHMENT FUR PIVOTED DRAFT BARS 0F VEHICLES.

APPLICATION FILED FEES), 1904.

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A TTOHNE VS 7 UNITED STATES Patented May 10, 1904.

PATENT OFFICE.

BRACE ATTACHMENT FOR PIVOTED DRAFT-BARS OF VEHICLES- SPECIFICATION forming part of Letters Patent No. 759,745, dated May 10, 1904.

Application filed February 29, 1904. Serial No. 195,799. (No model.)

To (LZZ lull/072i, if; um/y concern:

Be it known that we, LELAND H. PLANK and ARTHUR (J. PLANK, citizens of the United States, and residents of Rochester, in the county of ()lmstead and State of lVIinnesota, have. invented certain new and useful Improvements in Brace Attachments for Pivoted Draft-Bars of Vehicles, of which the following is a specification.

The object of the invention is to provide an adjustable brace for the combined draft and pivot-bolts of doubletrees and swingletrees, whereby the said bolts are supported in such manner as to be capable of withstanding great draft strain without danger of bending or being broken.

A further object is to provide certain improvements in the attachments of. doubletrees and swingletrees, as hereinafter more specifically indicated.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a plan view showing our invention applied to a doubletree and swingletree. Fig. 2 is a rear view of a swingletree and a portion of a doubletree provided with our improvement. Fig. 3 is a cross-section on the line 3 3 of Fig. 1. Fig. 4c is a vertical crosssection taken at right angles to the section shown in Fig. 3. Fig. 5 is a cross-section on the line 5 5 of Fig. 1. Fig. 6 is a plan view of the lower bearing for a doubletree, the same being provided with an extension forming part of the brace for the pivot of the doubletree. Fig. 7 is a plan view of the upper bearing for a doubletree.

In the drawings, A indicates the pole or tongue of a wagon, B a doubletree pivoted thereto, and G swingletrees, which are pivoted to the doubletree.

WV e will first describe the details of the construction of our improved brace in connection with the tongue and doubletree.

The circular bearing 1 (see Fig. 7) is socured to the under side of the doubletree B by means of screw-bolts 2, whose position is indicated in Fig. 1. The lower bearing 3 for the doubletree B (see Fig. 6) is practically a similar plate having, however, a tail or ex tension 3*, whose free end is upturned, as

shown in Fig. 5. This plate 3 is bolted to the tongue A and further secured by means of a U-shaped brace 4-, (see Fig. 1,) whose ends are secured to its under side. The bearing-plate 1 is provided with lugs or flanges 1, which are bent downward, as shown in Fig. 1, to embrace the edges of the lower bearing 3. A draft and pivot-bolt5 (see Fig. l) pass down through the doubletree, the bearingplates 1 and 3, the tongue A, and the brace4. and is secured by a nut 6.

Our improved brace is applied to the upper end or head of the bolt 5, as shown. (See especially Fig. A rod 7 connects the top portion of the bolt 5 with the upturned end of a shank or extension 3" of the lower bearing of the doubletree. For this purpose the front end of the brace 7 is provided with an eye to receive the bolt 5, the rear end of the same is screw-threaded, and nuts 8 are applied thereto on each side of the extension 3, as shown. it will be seen that by this means the pivot-bolt 5 is most effectively braced, so it may resist draft strain to any extent without bending or breaking; further, that the brace may be practically lengthened or shortened to the slight degree which may be required in first adjustment of the parts or to take up wear, &c.

The application of our improved brace to the swingletreeC is practically the same. Thus, as shown in Figs. 1, 2, 3, the brace-rod 7 is applied to the pivot-bolt 5 and connected with the rear extension or shank 3" of a plate whose forward end is'connected with apivotbolt. Nuts are applied to the rod 7 in the same manner as to the brace? of the doubletree. The plate 3 is supported by a brace 9, (see Fig. 3,) whose lower forward end is sooured to and by a screw 10. (See especially Fig. 3.)

It will be noticed that in the broader aspect of our invention the brace for the draft and pivot-bolt either for the doubletree or swingletree may be connected with any suitable liXed portion or attachment of the tongue or doubletree, but that we prefer the construction and arrangement of parts herein described. In any case the attachment constitutes a most eliicient means for supporting ing having a rear extension, of a brace which is connected with the head of a bolt and'whose rear end is threaded and nuts applied to said 5 brace in connection with the extension of the bearing, whereby the brace may be adjusted in the manner described.

LELAND H. PLANK. ARTHUR C. PLANK.

Witnesses:

H. A. EoKHoLD'r, F. R. EGKHOLDT. 

